<template>
  <div class="login_container">
    <!-- 登录盒子  -->
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单 -->
      <el-form
        :model="loginForm"
        ref="LoginFormRef"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  components: {},
  data() {
    return {
      //数据绑定
      loginForm: {
        username: "admin",
        password: "123456"
      },
      //表单验证规则
      loginFormRules: {
        username: [
          { required: true, message: "请输入登录名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "登录名长度在 3 到 10 个字符",
            trigger: "blur"
          }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码长度在 6 到 15 个字符",
            trigger: "blur"
          }
        ]
      }
    };
  },

  methods: {
    resetLoginForm() {
      //this=>当前组件对象，其中的属性$refs包含了设置的表单ref
      //   console.log(this)
      this.$refs.LoginFormRef.resetFields();
    },
    login() {
      //点击登录的时候先调用validate方法验证表单内容是否有误
      this.$refs.LoginFormRef.validate(async valid => {
        if (!valid) return;
        const { data: res } = await this.$http.post("login", this.loginForm);
        if (res.meta.status !== 200) {
          return this.$message.error("登录失败:" + res.meta.msg);
        }
        this.$message.success("登录成功");
        //保存token
        window.sessionStorage.setItem("token", res.data.token);
        // 导航至/home
        this.$router.push("/home");
      });
    }
  }
};
</script>
<style lang="less" scoped>
.login_container {
  position: relative;
  background-color: #2b5b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 5px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      height: 100%;
      width: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
